发明名称 |
Plastics foam production. |
摘要 |
<p>Method and apparatus for making plastics foam such as polyurethane foam in the form of a pre-froth for filling moulds, using a fluorocarbon as a gas-producing agent. To avoid gas break-out and facilitate control of density and quality according to the invention the pressurised composition undergoes several pressure drops. …<??>In one preferred form the pressure drops are produced at automatically controlled valves. In another embodiment the pressure drops take place at orifice plates.</p> |
申请公布号 |
EP0011421(A1) |
申请公布日期 |
1980.05.28 |
申请号 |
EP19790302427 |
申请日期 |
1979.11.02 |
申请人 |
U.T. (URETHANE TECHNOLOGY) LIMITED |
发明人 |
LYNN, KENNETH CLAYTON |
分类号 |
B29C47/36;B29B7/00;B29B7/74;B29C39/00;B29C39/02;B29C47/92;B29K105/04;(IPC1-7):29D27/02 |
主分类号 |
B29C47/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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